Sierra 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
2. Install the rear fuel line bundle clip nuts.
3. Remove the caps from the fuel and balance lines at the fuel tank.
4. Connect the fuel feed and pressure balance lines from the rear tank.
5. Remove the caps from the fuel and balance lines at the fuel tank.
6. Connect the fuel feed and pressure balance lines from the front tank.
7. Install the fuel fill cap.
8. Connect the negative battery cable.
9. Perform the following procedure in order to inspect for leaks.
1. Turn the ignition ON, with the engine OFF, for 2 seconds.
2. Turn the ignition OFF for 10 seconds.
3. Turn the ignition ON, with the engine OFF.
4. Inspect for fuel leaks.
EVAP Hoses/Pipes Replacement - Canister/Fuel Tank (Pickup and Cab/Chassis)
EVAPORATIVE EMISSION (EVAP) HOSES/PIPES REPLACEMENT - CANISTER/FUEL TANK (PICKUP AND CAB/CHASSIS)
REMOVAL PROCEDURE
IMPORTANT: Clean all the evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to
avoid possible fuel/EVAP system contamination.
